<template>
  <div class="header">
    <div class="box">
      <h3>头部</h3>
    </div>
  </div>
</template>

<script>
export default {

};
</script>
<style scoped>
.header {
  height: 50px;
  background: #ffffff;

}
.box {
  display: flex;
  justify-content: center;
  align-items: center;
}
h3{
    flex-shrink: 0; 
}
</style>